I guess it's to do with them luring you into arguements that are they know are incredibly stupid, and yet at the same time that can't be resisted if one has not encountered them before. I seem to remember that being the general activity of trolls from the myths and stories of my youth.

Ah, i see. Why is he beefing at me. Well, I can take a bit o' beef. And I can throw almighty beefy steaks back so they slap scalding hot onto troll foreheads and leave bearnaise sauce running down their gnarly little screwed up frowning troll faces, and those black griddle marks too.